Spray-nozzle.



K. MAcDONALD.

SPRAY NOZZLE. APPLICATION FILED APR. 30. m4.

WITNESSES INI/EIVTOH I 5754 flick/W741; Wm flat/[W y Patented Sept 14, 1915.

'tion,

KARL MACDONALD, 0F SWAMPSCOTT, MASSACHUSETTS.

SPRAY-NOZZLE.

. Specification of Letters Patent.

Patented Sept. 14, 1915.

Application filed April 30, 1914. Serial No. 835,444.

To all whom it may concern:

Be it known that I, KARL MAcDoNALn, a citizen of the United States, and a resident of Swampscott, in the county of Essex and State of Massachusetts, have invented a new and Improved Spray-Nozzle, of which the following is a full, clear, and exact description.

My invention relates to spray nozzles and more particularly to spray nozzles of a kind suitable for use in connection with flexible hose.

More particularly stated, I seek to produce a spray nozzle having such form that when a steam of water is directed through it the stream is split in such manner that the water is thrown off laterally at a number of successive points along the general axis of the stream.

Reference is made to the accompanying drawings forming part of this specification, and in which like letters indicate like parts.

Figure 1 is a side view partly in elevation and partly in section showing one form of my improved nozzle, the deflecting member having in this instance the form of a helix. Fig. 2 is a plan view of the helix, Fig. 1. Fig. 3 is a section on the line 3-3 of Fig. 1 looking in the direction of the arrow. Fig. 4 is a side view showing in section another form of my improved nozzle, the deflecting member in this instance being made up of a plurality of bafile plates. Fig. 5 is a section on the line 55 of Fig. 4 looking in the direction of the arrow.

A barrel 6 is provided with a thread 7 for fitting it upon a hose or analogous connecfor furnishing a supply of water, and is further provided with a washer 8 and with an angular portion alined to facilitate the rotation of the barrel in order to" secure it in position. The upper end 10 of the barrel is threaded internally and is engaged by a threaded sleeve 11. Integral with this sleeve and extending upwardly therefrom is a blade 12 having a helical form and provided with an outer edge 12*. The inner edge of this blade is formed into convolutions 13 and 14 each in succession having a smaller general diameter than the one preceding it.

he 15 of larger cross-diameter than that of the adjacent convolution 14 of the inner edge. The opening 15 extending through the sleeve 11 and the various convolutions 14 and 13, because of their gradually decreasing gensleeve 10 is provided with an opemng eral diameter along the prolongation of the axls of the barrel 6, together virtually formmg a conical spiral. When water is discharged from the barrel 6 through the sleeve 11 the stream is gradually split or peeled off, or in other words diverted laterally as indicated by arrows in Fig. 1. The distribution of the stream of-water is therefore such as to scatter in different directions with some degree of uniformity.

In the form shown in Fig. 4 a sleeve 17 is-provided with an opening 18 and with a member 16 having the form of a cone frustum. A baflie plate 19, having the form of a cone frustum, is provided with a simple opening 20 having a cross-diameter slightly less than that of the opening 18. Another cone frustum 21 is provided with a simple opening 22 of still smaller diameter. A baflie plate 23 is mounted upon a stem 24. A spring frame 25 is provided with arms 26 and 27, the latter being secured upon the baflie plates 21 and 19. The frame carries,

the stem 24 and is itself supported upon the frusto-oonical plate 16. Collectively speaking, the nozzle shown in Fig. 4 therefore comprises a number of baflie plates each having the form of a cone or cone frustum, and contains a number of openings of different diameter, arranged in axial register with each other, so that the boundaries of the openings together describe roughly a cone. When water is discharged through the barrel 6 and opening 18 the stream is diverted or split off by the various baiHe plates, and the distribution is thus rendered substantially uniform.

I do not limit myself to the precise construction shown, as variations may be made therein without departing from the spirit of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1. In a spray nozzle, the combination with a barrel member provided with an axial opening through which a stream of liquid may be discharged, of a spreading member removably held within the outer end of said barrel member and consisting of a series of outwardly and upwardly flared portions whose inner and outer faces are continuous and parallel and whose outer edges lie in a cylindrical surface. 7

2. In a spray nozzle thecombination with a barrel member provided with a central bore for discharge of a liquid, of a spreading member removably held in the outer end of said bore and consisting of a series of outwardly and upwardly flared portions whose inner and outer faces are continuous and parallel, and whose outer edges lie in a cylindrical surface, said spreading member having a central'passage progressively decreasing in diameter outwardly.

3. A spray nozzle comprising a barrel provided with an axial opening for the discharge of a liquid, a blade rigidly secured at the outer end of the same and wound into the form of a helix and flaring upwardly 115 and outwardly, the inner edge of said helix forming a conical spiral.

4. A spray nozzle comprising a. barrel having an axial opening for discharge of a liquid, a sleeve rigidly secured at the outer end of the same, and a blade rigidly secured to said sleeve, projecting in advance thereof and Wound helically, and flared upwardly and outwardly to form a spreading member Evhose outer edge lies in a cylindrical sur ace.

In testimony whereof I have signed my name to thisspecification in the presence of two subscribing witnesses.

KARL MACDONALD.

Witnesses:

JOHN WESLEY CUNNINGHAM, CHARLES V. BURGESS. 

